Flaw detection method and system for high-voltage transmission line

The invention discloses a flaw detection method for a high-voltage transmission line. The method comprises the following steps: receiving a fault signal of the high-voltage transmission line through an eddy current sensor and a magnetic sensor; the flaw detection system for the high-voltage transmission line comprises a fault signal induction device which is provided with an eddy current sensor and a magnetic sensor simultaneously. According to the flaw detection method, fault signals are received through the eddy current sensor and the magnetic sensor, and compared with information delay and low detection speed of naked eye inspection and judgment of a manual visual detection method and an aerial survey method, the flaw detection method has information transmission and analysis timeliness and higher detection speed; compared with an infrared thermal imaging detection method, the method has the advantages that the method is easily influenced by environment temperature and detection can be carried out under th